Given:
The sides of the right triangular base measures 9 cm, 12 cm and 15 cm.
The height of the prism is 20 cm.
To find:
The surface area of a triangular prism.
Solution:
We know that, the area of a triangular prism is
Where, P is the perimeter of the triangular base and h is the height of the prism.
The sides of the right triangular base measures 9 cm, 12 cm and 15 cm. So, the perimeter of the right triangular base is
Now, the area of the triangular prism is
Therefore, the surface area of a triangular prism is 720 square centimetres.
352 . If you multiply 16 by 22 it will give u an answer of 352
C. is the answer
hoped it helped
Where is 'm?' Why is m used in your question.
Set it up as an equation:
m=miles she can drive
42+.35m=70
Subtract the 42, so
.35m= 28
Divide by .35, so
m=80
She can drive 80 miles